With adjustable arms and legs, this playful primate is ready to dance the day away. And when it's time to settle down, Marvin The Monkey sets the mood by playing soothing sounds like a lullaby or a babbling stream. A soothing way to help ease separation anxiety. Sounds include Monkey Chatter, Waterfall, Gentle Stream and Sleep Lullaby. Features sound box timer, 2 sleep-timer options: 23 and 45 minutes, and adjustable arms and legs with Velcro® tab for easy attachment to a bed rail or chair arm. Requires 2 "AA" batteries (included).